prEN 12904 rev

Products used for treatment of water intended for human consumption - Silica sand and silica gravel prEN 12904 rev

Scope

This document is applicable to silica sand and silica gravel used for treatment of water intended for human consumption. It describes the characteristics of silica sand and silica gravel and specifies the requirements and the corresponding test methods for silica sand and silica gravel. It gives information on their use in water treatment.